Chapter 7&8 Flashcards Preview

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Flashcards in Chapter 7&8 Deck (8)
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1
Q

The farther apart objects are?

A

The weaker their attraction

2
Q

Why does the moon exert a greater gravitational pull on the tides?

A

It’s closer

3
Q

Projectiles thrown at what degree travel the farthest?

A

45

4
Q

How do objects have to be traveling for air drag to affect them?

A

At very high speeds

5
Q

What does horizontal speed have no effect on?

A

Downward acceleration due to gravity

6
Q

How high do most satellites orbit above the Earths surface to be above its atmosphere?

A

150km

7
Q

The higher the orbit of a satellite, what happens to its speed at period?

A

Speed decreases, period becomes longer

8
Q

The greater the masses of objects are the greater their what?

A

Attraction